Oxygen
Oxygen
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Oxygen ΒΆ
AtomicNumber: 8
Element: Oxygen
Symbol: O
AtomicMass: 15.999
NumberofNeutrons: 8
NumberofProtons: 8
NumberofElectrons: 8
Period: 2
Group: 16.0
Phase: gas
Radioactive: nan
Natural: yes
Metal: nan
Nonmetal: yes
Metalloid: nan
Type: Nonmetal
AtomicRadius: 0.65
Electronegativity: 3.44
FirstIonization: 13.6181
Density: 0.00143
MeltingPoint: 50.5
BoilingPoint: 90.2
NumberOfIsotopes: 8.0
Discoverer: Priestley/Scheele
Year: 1774.0
SpecificHeat: 0.918
NumberofShells: 2
NumberofValence: 6.0